/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "tim.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "music.h"
#include "key.h"
#include "OLED.h"
#include "stm32f1xx.h"
#include "math.h"
#include <stdlib.h>
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
int KeyNum;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint8_t key_data[6]={0};
char music_num=5,music_num_last=5;
uint8_t KEY4_f=0,KEY5_f=0;
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_TIM4_Init();
  MX_TIM2_Init();
  /* USER CODE BEGIN 2 */
    OLED_Init();
	HAL_TIM_Base_Start(&htim4);
	HAL_TIM_PWM_Start(&htim4,TIM_CHANNEL_2);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  //播放、暂停
	  if(KEY_S1() == 0)
	  {
		  HAL_Delay(20);  //按键消抖，下面同理
		  OLED_Show1();   //OLED显示，下面同理
		  Song1();        //放第一首歌，下面同理
		  
		  while(!KEY_S1());   //保持按键状态
	  }
	  
	  //下一首
	  if(KEY_S2() == 0)
	  {
		  HAL_Delay(20);
		  
		  if(KEY_S2() == 0)
		  {
			  KEY4_f = 0;   //按键4不作用
			  KEY5_f = 0;   //按键5不作用
			  music_num++;
		  }
		  if(music_num >= 4) music_num = 0;
		  
		  while(!KEY_S2());
	  }
	  
	  //上一首
	  if(KEY_S3() == 0)
	  {
		  HAL_Delay(20);
		  
		  if(KEY_S3() == 0)
		  {
			  KEY4_f = 0;
			  KEY5_f = 0;
			  music_num--;
		  }
		  if(music_num < 0) music_num = 3;
		  
		  while(!KEY_S3());
	  }
	    
	  //顺序播放
	  if(KEY_S4() == 0)
	  {
		  HAL_Delay(20);
		  if(KEY_S4() == 0)
		  {
			 KEY4_f = 1;
			 KEY5_f = 0;
		  }
		  
		  while(!KEY_S4());
	  }
	  if(KEY4_f)
	  {
		  music_num++;
		  if(music_num >= 3) music_num = 0;
	  }
	    
	  //随机播放
	  if(KEY_S5() == 0)
	  {
		  HAL_Delay(20);
		  if(KEY_S5() == 0)
		  {
			 KEY4_f = 0;
			 KEY5_f = 1;
		  }
		  
		  while(!KEY_S5());
	  }
	  if(KEY5_f)
	  {
		  music_num = rand()%3;   //随机取数字1-3
	  }
	  
	  //播放、显示处理
	  if(music_num_last != music_num)
	  {
		  music_num_last = music_num;
		  buzzer_off();
		  
		  if(music_num == 0)
		  {
			  OLED_Clear();
			  OLED_Show1();

			  HAL_GPIO_WritePin(LED1_GPIO_Port,LED1_Pin,GPIO_PIN_SET);     //LED1亮，LED3灭
			  HAL_GPIO_WritePin(LED3_GPIO_Port,LED3_Pin,GPIO_PIN_RESET);
			  
			  Song1();   //播放第一首，下面同理
		  }
		  else if(music_num == 1)
		  {
			  OLED_Clear();     //清空OLED显示，重新显示其他内容
			  OLED_Show2();
			  			  
			  HAL_GPIO_WritePin(LED1_GPIO_Port,LED1_Pin,GPIO_PIN_RESET);   //LED1灭，LED3亮
			  HAL_GPIO_WritePin(LED3_GPIO_Port,LED3_Pin,GPIO_PIN_SET);
			  
			  Song2();
		  }
		  else if(music_num == 2)
		  {
			  OLED_Clear();
			  OLED_Show3();
			  
			  HAL_GPIO_WritePin(LED1_GPIO_Port,LED1_Pin,GPIO_PIN_SET);    //灯全亮
			  HAL_GPIO_WritePin(LED3_GPIO_Port,LED3_Pin,GPIO_PIN_SET);
			  
			  Song3();
		  }
		  else if(music_num == 3)
		  {
			  OLED_Clear();
			  OLED_Show4();
			  
			  HAL_GPIO_WritePin(LED1_GPIO_Port,LED1_Pin,GPIO_PIN_RESET);  //灯全灭
			  HAL_GPIO_WritePin(LED3_GPIO_Port,LED3_Pin,GPIO_PIN_RESET);

			  __HAL_TIM_SET_COMPARE(&htim4, TIM_CHANNEL_2, 500);    //报警3秒
			  HAL_Delay(3000);
			  __HAL_TIM_SET_COMPARE(&htim4, TIM_CHANNEL_2, 0);
		  }
				  
	  }
	  		
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
